To evaluate the effect of anode plasma ununiformity on LIB focusibility, we have developed a new PIC simulation code. Inducing anode grooves in the code, we have represented the anode plasma ununiformity. On the experiment conditions, groove pitch ∼ 2.2 mm and groove width= 1.0 mm, simulation results is in good agreement with the those of the experiments. At the groove pitch= 2.4 mm, local divergence was very small, although focus length was very long. Therefore, we have recognized that the focusibility of SPFD would be determined by the z-deflection angle rather than the local divergence angle. To get higher power density on focus point, it may be effective to modify the anode curvature.
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